Correction to spatial mode transformation in a modified interferometer

Miyamoto, Yoko; Samlan, C. T.; Gautam, Surya Kumar; Naik, Dinesh N.; Viswanathan, Nirmal K.

doi:10.1117/12.2573768

Cited by 2 publications

(3 citation statements)

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“…It is not currently known if pure, higher order vortex LG modes (p = 0, l > 1) can be obtained with the type of mode transformation used in this work and is an area of ongoing research [25]. However, we have previously demonstrated that this transformation acts to either increase or decrease input mode vorticity [20].…”

Section: Discussionmentioning

confidence: 99%

Sampling a vortex from a Gaussian beam using a wedge-plate shearing interferometer

2021

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Many vortex-generation techniques have been developed to address a range of potential applications, exploiting their unique amplitude and phase profiles and their possession of orbital angular momentum. In this work, we present what may be the simplest method of vortex beam generation, requiring only a wedged optic: the wedge-plate shearing interferometer (WPSI). We show that the WPSI can reflect a first order Laguerre–Gaussian vortex beam ( L G 01 ) with a theoretical purity of > 99 % from an input fundamental Gaussian beam, with 98% L G 01 purity experimentally demonstrated. We demonstrate 1% power conversion with a route to 14%. The monolithic WPSI is a simple, compact, and highly stable device, which can operate at any wavelength that the material is transparent to. We anticipate that it will be useful where sampling a robust, high-purity vortex beam from a Gaussian laser beam is required, including low-cost vortex generation for metrology or education.

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Section: Discussionmentioning

confidence: 99%

Sampling a vortex from a Gaussian beam using a wedge-plate shearing interferometer

2021

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“…The balance between the positional and propagation direction deviations can be adjusted by changing cylindrical lens angle 𝜒. By selecting the appropriate angle, it is possible to generate an output that is equivalent to a superposition of beams with increased and decreased azimuthal and radial mode numbers 3 . In this formula, Δ𝑟 is the initial positional deviation generated by the birefringent element, 𝑘 is wavenumber and 𝑓 is focal length of cylindrical lens.…”

Section: Birefringent Twistermentioning

confidence: 99%

“…The interferometers were initially designed to introduce the deviations with mirrors 1 . We have previously proposed a birefringent twister for a more stable design 2 . In this paper we report a numerical simulation of the birefringent twister.…”

Section: Introductionmentioning

confidence: 99%